The Undinarchaeota (IMAGE) Royal Netherlands Institute for Sea Research Caption Archaea make up one of the main divisions of life, next to the Bacteria and the Eukaryotes, the latter of which comprise for example fungi, plants and animals. ) The authors named the previously unknown archaeal lineage (phylum) Undinarchaeota, in reference to the female water spirit or nymph Undina. Credit Anja Spang Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.